For live-bearing fish, the pregnancy length depends on the species of fish and varies considerably. For instance, according to the MCH Portal, platies have a gestation period of up to 7 weeks. On the other hand, mollies have pregnancies of about 4 weeks, according to Fish Lore.
Live-bearing fish are most frequently from the family Poeciliidae. Fish that give birth to live young include platies and mollies, as well as guppies, Endler's livebearers, swordtails and mosquito fish. These fish give birth to live, free-swimming young that can fend for themselves making them a better choice for novice fish raisers compared to egg-laying fish.Learn More
For day-to-day feeding, most pet owners prefer to feed betta fish freeze-dried food. These fish actually prefer live food, but freeze-dried food is less expensive and more readily available.Full Answer >
There are common tell-tale signs to help in diagnosing if your fish is ill and they are as follows: clamped fins, frayed fins, bloating, enlargement of eyes, erratic swimming, gasping for air at the surface of the water, scraping on plants and filters, loss of appetite, white spots on fins/body, parasites on body, and normally active fish who remain still. Conditions or symptoms may vary.Full Answer >
A frantically swimming fish is likely experiencing significant stress. Other stress symptoms include hitting the bottom of the tank, locking its fins to its side, and rubbing itself on gravel or rocks.Full Answer >
According to Practical Fishkeeping, the first sign of pregnancy is that the fish's belly enlarges and appears rounder. Pregnant fish also exhibit a black spot on the belly called a gravid mark. As the pregnancy progresses, the fish's belly becomes very large and distended, and the gravid mark becomes larger and more obvious.Full Answer >